Lights Magazine TV

Escultura

POR GRACIELA VALDEZ PLATA

ARTISTA PLÁSTICA

PODEMOS LLAMAR ESCULTURA AL ARTE DE CREAR EN ESPACIO Y VOLUMEN TANTO MODELANDO COMO TALLANDO DIFERENTES MATERIALES.

La Escultura se ha venido practicando desde tiempos tan antiguos como el paleolítico, tanto como una forma de perpetuar lo que nos rodea,  como en la elaboración de utensilios para diversos usos.  Se utilizan materiales como: piedra, hueso, marfil, madera, mármol, granito, así como el modelado en arcilla para posteriormente realizar el vaciado en metales como el  bronce, hierro o el oro.

Hoy en día se emplean  diversos materiales para realizar esculturas además de las mencionadas, como pueden ser cera, plastilina, polímeros, resinas, poli estireno, fibra de vidrio, etc.

Entre las técnicas que se utilizan para esculpir están las de Tallado y las de Modelado.

En las de Talla se requiere del empleo de cinceles y diferentes herramientas para dar forma y se dice que son de sustracción, pues se va eliminando el material hasta llegar a la forma deseada.

En las de Modelado como la arcilla, se trabaja tanto manualmente como con la ayuda de diferentes implementos, y se dice que son aditivas, ya que se puede ir agregando material al ir modelándolo.

En el caso de las Esculturas en metales, estas conllevan un proceso de modelado, que puede ser arcilla, para posteriormente realizar un molde que permitirá el vaciado y fundición del metal.

Hay diferentes tipos de esculturas,  que pueden llamarse exentas, que pueden observarse desde cualquier ángulo, es decir, son tridimensionales. Y de Relieve, que siguen teniendo volumen y espacio y comúnmente sobresalen de alguna edificación, ya que carecen de la parte posterior. En las de Relieve hay diferentes tipos, como el bajo relieve, medio relieve y alto relieve.

Una de las piezas escultóricas  que más admiración me causa es la del Éxtasis de Santa Teresa (1652) de  Gian Lorenzo Bernini (1598-1680) por la forma en que logra plasmar las emociones.

En Nuevo Laredo, el Arquitecto Florentino Medina (q.p.d.), oriundo de Gómez Palacio, Durango, quien además de haber estudiado Arquitectura en el Instituto Politécnico Nacional,  realizó estudios profesionales de Artes Plásticas en la Academia de San Carlos, desarrolló diferentes proyectos para la ciudad, mismos que lo hicieran cambiar su residencia en los años 50’s a esta ciudad hasta su muerte. El Arquitecto dedicó gran parte de su vida a las Artes Plásticas, como Pintor y Escultor, realizó el retrato del Padre Tomás Lozano, y obras escultóricas que pueden apreciarse en diferentes lugares, como la fuente de la “Alameda a la Mujer”. Personalmente tuve la fortuna de conocerlo siendo niña, visitar su estudio y verlo trabajar.

De las Bellas Artes, en mi incursión en estas, de particular manera disfruto mucho el esculpir, ya sea modelando en barro, en plastilina u otros materiales tanto blandos como duros, por el contacto que se puede tener con estos, el hecho de  tocarlos  y sentirlos con las manos, creando formas tridimensionales es una sensación única y totalmente diferente a la pintura.

“Aunque desde temprana edad dibujaba y pintaba, creo que el haber conocido a grandes Artistas, como el Arquitecto Medina y el Maestro Alberto Carreira, en mi infancia y con quien tuve la fortuna de convivir, ha sido una gran influencia para mí en las Artes Plásticas.”

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    Una de las claves para saber si el problema es físico o psicológico es el sueño. Muchos hombres desean hacer el amor toda la noche y satisfacer plenamente a su pareja, pero no pueden hacerlo debido a su problema sexual. Comprar cialis genérico

  • el febrero 6, 2020 a las 11:59 am
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    sua explicação

  • el febrero 7, 2020 a las 2:08 am
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    Tampoco olvidemos que la pérdida de deseo sexual a menudo puede ser consecuencia de otros factores la lista que hemos presentado al inicio del artículo, por lo que hay que consultarlo siempre con un especialista. Es todo. https://impotencia.space/

  • el febrero 8, 2020 a las 5:08 am
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    Una condición llamada síndrome metabólico también puede causar DE. La impotencia orgánica afecta a las arterias o venas del pene o a ambas y es la causa más común de la impotencia, sobre todo en los hombres de edad avanzada.

  • el febrero 11, 2020 a las 8:54 pm
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    Cчетчики-расходомеры массовые Micro Motion

    Cчетчики-расходомеры массовые Micro Motion (далее счётчики-расходомеры) предназначены для прямого измерения массового расхода, плотности, массы, определения объемного расхода и объема жидкости и газа в химической, нефтехимической, нефтяной, пищевой, фармацевтической и других отраслях промышленности, в т.ч. во взрывоопасных зонах.

    Принцип действия счетчиков-расходомеров основан на использовании сил Кориолиса, действующих на элементы среды, двигающейся по петле трубопровода, которая колеблется с частотой вынуждающей силы, создаваемой катушкой индуктивности при пропускании через неё электрического тока заданной частоты. Базовый процессор счетчика-расходомера постоянно подстраивает частоту вынуждающих колебаний с тем, что бы она совпадала с собственной (резонансной) частотой колебаний петли, которая в свою очередь зависит от плотности среды, протекающей через полость счётчика-расходомера. Сопоставляя полученную в результате подстройки резонансную частоту колебаний со значениями резонансных частот, полученных при калибровке на средах с известной плотностью, счетчик-расходомер имеет возможность определить плотность протекающей через него среды.

    Так как направления сил Кориолиса противоположны для элементов среды, двигающихся в различных направлениях относительно оси вращения, то при наличии потока петля в целом совершает колебания изгиба (противоположные участки петли совершают угловые перемещения относительно точки крепления со сдвигом по времени). Вследствие этого, между гармоническими колебаниями противоположных участков петли возникает измеряемая разность фаз, которая используется для определения массового расхода жидкости или газа. Параметры колебаний петли измеряются с помощью катушек индуктивности.

    Счетчики-расходомеры, принцип измерения которых основан на применении силы Кориолиса, не имеют вращающихся частей, и результаты измерений не зависят от наличия твердых частиц или иных примесей в жидкости. Отклонение температуры среды от температуры калибровки компенсируется установкой нуля, а изменение давления среды внесением соответствующей поправки.

    Счетчики-расходомеры состоят из первичного измерительного преобразователя массового расхода и плотности, и электронного преобразователя, который может быть встроенным и выносным (на расстояние до 300 м). Первичные преобразователи оснащаются базовым процессором. Базовый процессор первичного преобразователя реализует алгоритмы вычисления массы, массового расхода, плотности и других параметров потока. Выпускаются две модели базовых процессоров: модель 700 (стандартная) и модель 800 (усовершенствованная). Электронные преобразователи обеспечивают обработку цифровых сигналов, поступающих с базового процессора первичного измерительного преобразователя, регистрацию результатов измерений параметров потока и передачу результатов измерений по различным каналам связи. Первичный измерительный преобразователь массового расхода может быть использован и без электронного преобразователя.

    Подробнее ознакомиться с характеристиками, узнать цены и заказать счётчик-расходомер вы можете по ссылке – https://neftel.ru/rashodomer-micro-motion

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